CN219382762U - Floating type photovoltaic and offshore wind farm at sea - Google Patents

Abstract

The utility model relates to the technical field of floating type photovoltaics, in particular to an offshore floating type photovoltaic and an offshore wind farm. The offshore floating type photovoltaic comprises a floating body, a photovoltaic assembly, a sliding assembly and a plurality of groups of pull rope structures, wherein the floating body floats on the sea surface, a through hole is formed in the middle of the floating body, the floating body is suitable for being sleeved on the periphery of a tower through the through hole, and a space is arranged between the floating body and the tower; the photovoltaic module is connected with the upper surface of the floating body; the sliding component is in sliding connection with the tower body of the tower barrel; the plurality of groups of stay cord structures are distributed along the circumferential direction of the tower barrel, one end of each stay cord structure is connected with the floating body, and the other end of each stay cord structure is connected with the sliding assembly. The offshore floating type photovoltaic and offshore wind farm provided by the utility model has the advantages of resisting the offshore wind wave, increasing the conversion rate and reducing the manufacturing cost.

Description

Floating type photovoltaic and offshore wind farm at sea

Technical Field

The utility model relates to the technical field of floating type photovoltaics, in particular to an offshore floating type photovoltaic and an offshore wind farm.

Background

Photovoltaic refers to a novel power generation technology for directly converting solar energy into electric energy. The offshore photovoltaic is a new energy utilization mode and resource development mode, has natural environmental advantages, has wide water surface without shielding, is longer in sunlight, can utilize sufficient water surface reflected light, and remarkably improves the generated energy. Offshore wind farms refer to offshore wind power with a water depth of about 10 meters. The offshore wind power plant has the advantages of occupying no land resources, being basically not influenced by topography and landform, having higher wind speed, richer wind energy resources, larger single machine capacity of the wind turbine generator and higher annual utilization hours. The combination of the offshore photovoltaic and the offshore wind farm can obviously improve the conversion rate and reduce the cost of the offshore photovoltaic. However, most of the prior art is that pile foundation fixed type offshore photovoltaic and offshore wind power plants are combined, the device cannot resist the impact of offshore wind and wave, and the condition that the photovoltaic is damaged by wind and wave often occurs.

Disclosure of Invention

Therefore, the utility model aims to overcome the defects that most of offshore photovoltaics cannot resist the impact of offshore wind waves and the manufacturing cost is high in the prior art, thereby providing an offshore floating photovoltaic and an offshore wind farm.

In order to solve the problems, the utility model provides an offshore floating type photovoltaic which comprises a floating body, a photovoltaic module, a sliding module and a plurality of groups of stay rope structures, wherein the floating body floats on the sea surface, a through hole is formed in the middle of the floating body, and the floating body is suitable for being sleeved on the periphery of a tower through the through hole and is provided with a space with the tower; the photovoltaic module is connected with the upper surface of the floating body; the sliding component is in sliding connection with the tower body of the tower barrel; the plurality of groups of stay cord structures are distributed along the circumferential direction of the tower barrel, one end of each stay cord structure is connected with the floating body, and the other end of each stay cord structure is connected with the sliding assembly.

The offshore floating type photovoltaic provided by the utility model further comprises a plurality of sliding rails which are distributed along the circumferential direction of the tower, wherein the sliding rails are fixed on the tower body of the tower along the axial direction of the tower; the sliding assembly comprises a sliding ring beam and a plurality of sliding blocks, the sliding ring beam is sleeved on the periphery of the tower in a sliding manner, one ends, far away from the floating body, of the plurality of groups of stay rope structures are connected with the outer ring wall of the sliding ring beam, and the connection positions of the plurality of groups of stay rope structures and the sliding ring beam are distributed along the circumferential direction of the sliding ring beam; the sliding blocks are arranged on the inner annular wall of the sliding ring beam and are in sliding connection with the sliding rails.

The offshore floating type photovoltaic device provided by the utility model further comprises an annular protection structure which is sleeved on the periphery of the sliding component and fixedly connected with the tower barrel; the protection structure is provided with a plurality of long holes extending along the axial direction of the tower cylinder at intervals, a plurality of long-strip-shaped anti-silting soft strips are arranged at the long holes, and one end, far away from the floating body, of the pull rope structure penetrates through the anti-silting soft strips and is connected with the sliding assembly.

According to the offshore floating photovoltaic provided by the utility model, the positions of the plurality of groups of long holes are in one-to-one correspondence with the positions of the plurality of sliding rails.

The utility model provides an offshore floating type photovoltaic, wherein the protective structure comprises a lantern ring and two annular cover plates, the lantern ring is sleeved on the periphery of a sliding component and provided with long holes; the two annular cover plates are sleeved on the periphery of the tower, the inner rings of the two annular cover plates are respectively connected with the periphery of the tower at two ends of the sliding rail, and the outer rings are respectively connected with the upper end and the lower end of the lantern ring.

According to the offshore floating photovoltaic provided by the utility model, the height of the sliding component is smaller than that of the sliding rail, and the height of the lantern ring is larger than or equal to that of the sliding rail.

The utility model provides an offshore floating type photovoltaic, wherein a floating body comprises a flexible air cushion, a connecting rope and at least one group of annular floating pipes, and the annular floating pipes are connected with the flexible air cushion through the connecting rope; the flexible air cushion is of an annular structure, is sleeved on the periphery of the tower, and the photovoltaic module is connected to the upper surface of the flexible air cushion; one end of the pull rope structure, which is far away from the sliding component, is connected with the annular floating pipe.

According to the offshore floating type photovoltaic, two annular floating pipes are arranged in each group, one annular floating pipe is connected with the inner ring of the flexible air cushion through the connecting rope, and the other annular floating pipe is connected with the outer ring of the flexible air cushion through the connecting rope.

The utility model provides an offshore floating type photovoltaic, wherein the pull rope structure comprises a first pull rope and a second pull rope, one end of the first pull rope is connected with an annular floating pipe connected with an inner ring of a flexible air cushion, and the other end of the first pull rope is connected with a first connecting end of a sliding assembly; one end of a second stay cord is connected with the annular floating pipe connected with the outer ring of the flexible air cushion, and the other end of the second stay cord is connected with a second connecting end of the sliding assembly; the first connecting end is arranged above the second connecting end.

The utility model also provides an offshore wind farm, which comprises a tower barrel, the offshore floating photovoltaic and a power transmission system, wherein the offshore floating photovoltaic is sleeved on the periphery of the tower barrel; and the photovoltaic component is connected with the power transmission system through a cable.

The utility model has the following advantages:

1. the offshore floating type photovoltaic provided by the utility model is different from the pile foundation fixed type photovoltaic in the prior art, and the floating body capable of floating on the sea surface is arranged to enable the offshore floating type photovoltaic to adapt to the sea with different depths, so that the application range is wider, the laying area is larger, and the conversion rate is greatly improved; the body of the tower barrel is provided with the sliding component, the floating body is connected with the sliding component through the plurality of groups of pull rope structures, and when the sea has wind waves, the sliding component can drive the floating body to slide up and down through the plurality of groups of pull rope structures, so that the acting force of the sea wind waves on the photovoltaic component is resisted, and the photovoltaic component is prevented from being damaged due to the influence of the environment acting force.

2. According to the offshore floating type photovoltaic device, the plurality of anti-silting soft strips are arranged on the lantern ring in the annular protective structure, the stay rope structure penetrates through the lantern ring and is respectively connected with the sliding assembly and the floating body, the anti-silting soft strips can effectively prevent seawater from entering the sliding assembly or sediment in the sea from entering the sliding assembly, the stay rope structure can move in the long holes, the annular cover plates are respectively arranged at the upper end and the lower end of the lantern ring, so that the inner space of the lantern ring is airtight, the sliding assembly is effectively protected, and the damage to the sliding assembly caused by seawater or sediment in the sea is avoided.

3. According to the offshore wind power plant, the offshore floating type photovoltaic is arranged in the area, which is nearby the tower drum of the offshore wind power plant and cannot be used for traveling, of the offshore wind power plant area, the offshore floating type photovoltaic can share a plurality of systems with the offshore wind power plant, the cost of the offshore floating type photovoltaic is reduced, the offshore wind power plant and the offshore floating type photovoltaic are combined, wind and solar integration is achieved, and the efficiency of offshore power generation is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a top view of an offshore floating photovoltaic and offshore wind farm in this embodiment.

Fig. 2 is a cross-sectional view of an offshore floating photovoltaic and offshore wind farm in this embodiment.

Fig. 3 is a partial cross-sectional view of a floating body of an offshore floating photovoltaic in this embodiment.

Fig. 4 is a schematic view of a sliding assembly of an offshore floating photovoltaic in this embodiment.

Fig. 5 is a cross-sectional view of a sliding assembly of an offshore floating photovoltaic in this embodiment.

Fig. 6 is a schematic view of a protective assembly of an offshore floating photovoltaic in this embodiment.

Reference numerals illustrate:

1. a floating body; 11. a flexible air cushion; 12. a connecting rope; 13. an annular floating pipe; 2. a photovoltaic module; 3. a sliding assembly; 4. a pull rope structure; 41. a first pull rope; 411. a first connection end; 42. a second pull rope; 421. a second connection end; 5. a tower; 6. a slide rail; 71. a collar; 711. a silting-proof soft strip; 72. an annular cover plate; 8. an anchor.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 to 6, in this embodiment, there is provided an offshore floating type photovoltaic device, which includes a floating body 1, a photovoltaic module 2, a sliding module 3 and a plurality of groups of pull rope structures 4, wherein the floating body 1 floats on the sea surface, a through hole is formed in the middle of the floating body, and the floating body 1 is adapted to be sleeved on the periphery of a tower 5 through the through hole, and a space is provided between the floating body and the tower 5; the photovoltaic module 2 is connected with the upper surface of the floating body 1; the sliding component 3 is in sliding connection with the tower body of the tower 5; the plurality of groups of stay cord structures 4 are distributed along the circumferential direction of the tower 5, one end of each stay cord structure is connected with the floating body 1, and the other end of each stay cord structure is connected with the sliding assembly 3.

Specifically, the material of the floating body 1 is not limited, and a material which is light in weight, large in buoyancy, not easily damaged, and good in insulation is generally used; the photovoltaic module 2 in this application is made of BIPV material.

Unlike the pile foundation fixed type photovoltaic in the prior art, the floating body 1 capable of floating on the sea surface is arranged, so that the offshore floating type photovoltaic is suitable for the sea with different depths, the application range is wider, the laying area is larger, and the conversion rate is greatly improved; the body of the tower 5 is provided with the sliding component 3, the floating body 1 is connected with the sliding component 3 through a plurality of groups of pull rope structures 4, and when there is a wind wave at sea, the sliding component 3 can drive the floating body 1 to slide up and down through a plurality of groups of pull rope structures 4, so that the acting force of the wind wave at sea on the photovoltaic component 2 is resisted, and the photovoltaic component 2 is prevented from being damaged due to the influence of the acting force of the environment.

In this embodiment, the tower further includes a plurality of sliding rails 6 distributed along the circumferential direction of the tower 5, where the sliding rails 6 are fixed on the tower body of the tower 5 along the axial direction of the tower 5; the sliding assembly 3 comprises a sliding ring beam and a plurality of sliding blocks, the sliding ring beam is sleeved on the periphery of the tower 5 in a sliding manner, one ends, far away from the floating body 1, of the plurality of groups of pull rope structures 4 are connected with the outer ring wall of the sliding ring beam, and the connection positions of the plurality of groups of pull rope structures 4 and the sliding ring beam are distributed along the circumferential direction of the sliding ring beam; and a plurality of sliding blocks are arranged on the inner annular wall of the sliding annular beam, and the sliding blocks are in sliding connection with the sliding rail 6.

Specifically, the sliding rail 6 is fixed on the tower body of the tower 5 in a welding manner, and the sliding block is fixed on the inner annular wall of the sliding annular beam in a welding manner.

In the specific embodiment, one ends of the plurality of groups of stay rope structures 4, which are far away from the floating body 1, are fixedly connected with the anchors 8, the anchors 8 are welded on the outer annular wall of the sliding annular beam, the welding positions of the anchors 8 are in one-to-one correspondence with the positions of the welding sliding blocks of the inner annular wall of the sliding annular beam, the positions are more concentrated on the force exerted by the stay rope structures 4, and the stay rope structures 4 can be driven to move to the greatest extent by the minimum force; when there is the stormy waves at sea, a plurality of sliders that slip ring roof beam inner ring wall set up slide from top to bottom along a plurality of slide rails 6, drive the one end of the multiunit stay cord structure 4 that connects on the slip ring roof beam outer ring wall and remove together, drive the float body 1 that the other end of multiunit stay cord structure 4 is connected and move together afterwards.

Alternatively, the sliding rail 6 may be a sliding rail structure common in the prior art, or two steel plates may be welded on the tower body of the tower 5 at intervals, and the middle interval is used as a sliding rail; the sliding block can also adopt a sliding block form which is common in the center of the prior art and can be in sliding fit with the sliding rail 6 structure, and a steel plate can be welded on the inner annular wall of the sliding ring beam to be used as the sliding block, and the steel plate slides in the sliding rail 6 formed by the two steel plates. The slide rail 6 may also be a groove-like structure formed by recessing on one slide bar.

In this embodiment, the device further includes a ring-shaped protection structure, which is sleeved on the periphery of the sliding component 3 and fixedly connected with the tower 5; the protection structure is provided with a plurality of long holes extending along the axial direction of the tower 5 at intervals, a plurality of long-strip-shaped anti-silting soft strips 711 are arranged at the long holes, and one end, far away from the floating body 1, of the pull rope structure 4 penetrates through the anti-silting soft strips 711 to be connected with the sliding assembly 3.

The annular protective structure can effectively keep the inside of the protective structure dry, and the sliding component 3 structure is prevented from being corroded by seawater or damaged by sediment in the sea.

In the specific embodiment, one end of the pull rope structure 4 is connected with the sliding component 3, the other end passes through the anti-silting soft strip 711 at the long hole and is connected with the floating body 1, when there is a wind wave at sea, the sliding component 3 drives the pull rope structure 4 to move, and the pull rope structure 4 can move in the anti-silting soft strip 711. The anti-silting soft strip 711 can also prevent the stay cord structure 4 from seawater entering the inside of the protection structure in the moving process.

In this embodiment, the positions of the plurality of groups of long holes are in one-to-one correspondence with the positions of the plurality of sliding rails 6. The positions of the plurality of groups of pull rope structures 4 fixed on the sliding ring beam are the same as the welding positions of the sliding blocks, because the forces applied by the positions to the plurality of groups of stretching structures are more concentrated, when the positions of the long holes are in one-to-one correspondence with the positions of the sliding rails 6, the forces applied by the pull rope structures 4 to the floating body 1 are more concentrated, so that the pull rope structures 4 cannot be bent and stressed at the long holes, and the situation that the pull rope structures 4 are damaged due to uneven forces is avoided.

In this embodiment, the protection structure includes a collar 71 and two annular cover plates 72, where the collar 71 is sleeved on the periphery of the sliding component 3 and is provided with the long hole; the two annular cover plates 72 are sleeved on the periphery of the tower 5, the inner rings of the two annular cover plates 72 are respectively connected with the periphery of the tower 5 at two ends of the sliding rail 6, and the outer rings are respectively connected with the upper end and the lower end of the lantern ring 71.

The inner rings of the two annular cover plates 72 are respectively connected with the peripheries of the tower 5 at two ends of the sliding rail 6, and the outer rings are respectively connected with the upper end and the lower end of the lantern ring 71, so that a closed space is formed inside the protective structure, and seawater or sediment in the seawater can be prevented from entering the inside.

In this embodiment, the height of the sliding component 3 is smaller than the height of the sliding rail 6, and the height of the collar 71 is greater than or equal to the height of the sliding rail 6.

The annular cover plates 72 arranged at the upper end and the lower end of the lantern ring 71 are matched with the lantern ring 71, so that the sliding assembly 3 can be protected from being damaged, and the sliding ring beam can be prevented from falling off when sliding up and down along the sliding rail 6.

In this embodiment, the floating body 1 includes a flexible air cushion 11, a connecting rope 12, and at least one set of annular floating pipes 13, where the annular floating pipes 13 are connected with the flexible air cushion 11 through the connecting rope 12; the flexible air cushion 11 is of an annular structure and sleeved on the periphery of the tower 5, and the photovoltaic module 2 is connected to the upper surface of the flexible air cushion 11; the end of the pull rope structure 4, which is far away from the sliding component 3, is connected with the annular floating pipe 13.

The photovoltaic module 2 can be adhered to the upper surface of the flexible air cushion 11; the annular floating pipe 13 is connected to stay cord structure 4 one end, and sliding component 3 is connected to the other end, and flexible air cushion 11 is connected through connecting rope 12 to annular floating pipe 13, has guaranteed stability and the wholeness of this application.

In this embodiment, two annular floating pipes 13 are provided, one annular floating pipe 13 is connected with the inner ring of the flexible air cushion 11 through the connecting rope 12, and the other annular floating pipe 13 is connected with the outer ring of the flexible air cushion 11 through the connecting rope 12.

The outer ring and the inner ring of the flexible air cushion 11 are connected with annular floating pipes 13, so that the buoyancy of the flexible air cushion 11 on the sea surface can be increased, and the flexible air cushion 11 can be supported to a certain extent; each annular floating pipe 13 is connected with the flexible air cushion 11 through a connecting rope, so that the floating body 1 floats on the sea surface to be more flexible, the displacement in the allowable range of the floating body 1 is increased, the floating body 1 can be better adapted to the sea stormy waves, and the phenomenon of small-amplitude side turning is avoided. And can avoid stay cord structure 4 and flexible air cushion 11 lug connection, reduce flexible air cushion 11's tie point, avoid flexible air cushion 11 to increase the sealing degree of difficulty because the tie point is too much, prevent flexible air cushion 11 gas leakage.

In this embodiment, the pull rope structure 4 includes a first pull rope 41 and a second pull rope 42, one end of the first pull rope 41 is connected to the annular floating pipe 13 connected to the inner ring of the flexible air cushion 11, and the other end is connected to the first connection end 411 of the sliding component 3; one end of the second pull rope 42 is connected with the annular floating pipe 13 connected to the outer ring of the flexible air cushion 11, and the other end is connected with the second connecting end 421 of the sliding assembly 3; wherein the first connection end 411 is disposed above the second connection end 421.

Specifically, the number of groups of the annular floating pipes 13 is not limited, in this embodiment, a group of pull rope structures 4 are arranged on the outer ring and the inner ring of the flexible air cushion 11 at intervals of 15 degrees, each group of pull rope structures 4 is correspondingly connected with a group of annular floating pipes 13, and a plurality of groups of annular floating pipes 13 form a ring shape around the tower 5, so that the connection stability between the flexible air cushion 11 and the tower 5 is enhanced.

One end of a first pull rope 41 is connected with the annular floating pipe 13 connected with the inner ring of the flexible air cushion 11, and one end of a second pull rope 42 is connected with the annular floating pipe 13 connected with the outer ring of the flexible air cushion 11; the other ends of the first pull rope 41 and the second pull rope 42 are connected with the sliding component 3, and the first connecting end 411 and the second connecting end 421 are arranged in the same vertical direction, so that the force application direction of each group of pull rope structures 4 is consistent to a certain extent, and the stability of the structures is enhanced.

The embodiment also provides an offshore wind farm, which comprises a tower 5, the offshore floating photovoltaic and a power transmission system, wherein the offshore floating photovoltaic is sleeved on the periphery of the tower 5; and the photovoltaic module 2 is connected with the power transmission system through a cable.

In particular, the offshore wind farm further comprises an anchoring system, a laying system and a grounding system.

The offshore floating type photovoltaic is arranged in the area, which cannot be used for sailing, near the tower 5 of the offshore wind farm, so that the offshore wind farm area can be fully used, the offshore floating type photovoltaic can share the anchoring system, the laying system and the grounding system with the offshore wind farm, the cost of the offshore floating type photovoltaic is reduced, the offshore wind farm and the offshore floating type photovoltaic are combined, wind and solar integration is realized, and the offshore power generation efficiency is greatly improved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. An offshore floating photovoltaic, comprising:

the floating body (1) floats on the sea surface, a through hole is formed in the middle of the floating body, the floating body (1) is suitable for being sleeved on the periphery of the tower (5) through the through hole, and a space is arranged between the floating body and the tower (5);

the photovoltaic module (2) is connected with the upper surface of the floating body (1);

the sliding component (3) is in sliding connection with the tower body of the tower drum (5);

and a plurality of groups of stay cord structures (4) are distributed along the circumferential direction of the tower cylinder (5), one end of each stay cord structure is connected with the floating body (1), and the other end of each stay cord structure is connected with the sliding assembly (3).

2. An offshore floating photovoltaic according to claim 1, further comprising a plurality of sliding rails (6) distributed along the circumference of the tower (5), the sliding rails (6) being fixed to the tower body of the tower (5) along the axial direction of the tower (5); the sliding assembly (3) comprises:

the sliding ring beams are sleeved on the periphery of the tower cylinder (5) in a sliding manner, one ends, far away from the floating body (1), of the plurality of groups of pull rope structures (4) are connected with the outer ring wall of the sliding ring beams, and the connection positions of the plurality of groups of pull rope structures (4) and the sliding ring beams are distributed along the circumferential direction of the sliding ring beams;

the sliding blocks are arranged on the inner annular wall of the sliding annular beam and are in sliding connection with the sliding rail (6).

3. An offshore floating photovoltaic according to claim 2, further comprising a ring-shaped protective structure, which is sleeved on the periphery of the sliding assembly (3) and fixedly connected with the tower (5); the anti-slip device is characterized in that a plurality of long holes extending along the axial direction of the tower (5) are formed in the protection structure at intervals, a plurality of long-strip-shaped anti-slip soft strips (711) are arranged at the long holes, and one end, far away from the floating body (1), of the pull rope structure (4) penetrates through the anti-slip soft strips (711) and is connected with the sliding assembly (3).

4. An offshore floating photovoltaic according to claim 3, wherein the positions of the plurality of groups of elongated holes are in one-to-one correspondence with the positions of the plurality of slide rails (6).

5. An offshore floating photovoltaic according to claim 3, wherein the protective structure comprises:

the lantern ring (71) is sleeved on the periphery of the sliding component (3) and is provided with the long hole;

the two annular cover plates (72) are sleeved on the periphery of the tower tube (5), the inner rings of the two annular cover plates (72) are respectively connected with the periphery of the tower tube (5) at two ends of the sliding rail (6), and the outer rings are respectively connected with the upper end and the lower end of the lantern ring (71).

6. An offshore floating photovoltaic according to claim 5, characterized in that the height of the sliding assembly (3) is smaller than the height of the sliding rail (6), the height of the collar (71) being greater than or equal to the height of the sliding rail (6).

7. An offshore floating photovoltaic according to any of claims 1-2, 4-6, characterized in that the floating body (1) comprises a flexible air cushion (11), connecting strings (12) and at least one set of ring-shaped floating tubes (13), the ring-shaped floating tubes (13) being connected to the flexible air cushion (11) by the connecting strings (12); the flexible air cushion (11) is of an annular structure and sleeved on the periphery of the tower (5), and the photovoltaic module (2) is connected to the upper surface of the flexible air cushion (11); one end of the pull rope structure (4) far away from the sliding component (3) is connected with the annular floating pipe (13).

8. An offshore floating photovoltaic according to claim 7, characterized in that each set of said ring-shaped floating pipes (13) has two, one of said ring-shaped floating pipes (13) being connected to the inner ring of said flexible air cushion (11) by said connecting rope (12), the other ring-shaped floating pipe (13) being connected to the outer ring of said flexible air cushion (11) by said connecting rope (12).

9. An offshore floating photovoltaic according to claim 8, wherein the pull-cord structure (4) comprises:

one end of a first pull rope (41) is connected with the annular floating pipe (13) connected with the inner ring of the flexible air cushion (11), and the other end of the first pull rope is connected with a first connecting end (411) of the sliding assembly (3);

one end of the second stay cord (42) is connected with the annular floating tube (13) connected with the outer ring of the flexible air cushion (11), and the other end of the second stay cord is connected with the second connecting end (421) of the sliding assembly (3);

wherein the first connection end (411) is disposed above the second connection end (421).

10. An offshore wind farm, comprising:

a tower (5);

the offshore floating photovoltaic according to any one of claims 1-9, being sleeved on the outer periphery of the tower (5);

and the photovoltaic assembly (2) is connected with the power transmission system through a cable.